Flu Cases Surge in DC Region

He said that on Monday, emails and letters went out to parents of students at the school. They have also been providing information about preventive measures via school web sites.

"In a case like this, just simple things like hand-washing, like keeping students home for 24 hours after they have symptoms, and dealing with other routine things like vaccinations can really help" fight the spread of illness, Kavits said.

While there have been some reports of a widespread outbreak in as many as 10 schools, those reports are incorrect, Kavits said.